1 February 1991 Fiber optic magnetic field sensor using spectral modulation encoding
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Proceedings Volume 1367, Fiber Optic and Laser Sensors VIII; (1991) https://doi.org/10.1117/12.24749
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States
This paper is devoted to the description of a new type of fiber optic magnetic field sensor based on spectral modulation encoding techniques. This device uses a Faraday magneto-optic element as transducer and converts the rotation of the plane of polarization of the light induced by the magnetic field into a small change in the large optical path difference provided by a birefringent coding plate. The use of a broadband source and of an interferometric detector, with an optical path difference matched to the sensor one, allows to reach high resolution and perfect down-lead insensitivity. A dual-wavelength arrangement is proposed to determine the temperature and magnetic fied values with the same probe.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michel Lequime, Michel Lequime, Carole Meunier, Carole Meunier, Hugues Giovannini, Hugues Giovannini, } "Fiber optic magnetic field sensor using spectral modulation encoding", Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); doi: 10.1117/12.24749; https://doi.org/10.1117/12.24749


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